“Jolly Jane” Toppan was “the most notorious woman poisoner of modern times”

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“Jolly Jane” Toppan worked as a nurse in New England in the late 19th Century and was well-loved by her patients for her conscientious attention and cheerful disposition. She confessed to poisoning 31 of those patients, and quite possibly did in a lot more.

[Criminal Episode 38: Jolly Jane]